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Post by A60stock on Feb 27, 2024 13:43:44 GMT
Issue still on going (Southbound) AM peak 27/02/2024.
Despite all trains using the fast lines south of harrow, the service is very slow as a result of sending everything down one line. I don't know if the fasts were signalled to take on an intensive service as the signalling is setup for fast running and longer intervals. Or is the congestion due to everything stopping at Wembley?
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Post by goldenarrow on Feb 27, 2024 18:55:48 GMT
A combination of both. Signalling-wise there are still patches little changed from the days of loco-hauled running so sending +16tph down them is going to have predictable consequences. 18mins to clear the area was the longest I've had so far
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Tom
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Post by Tom on Feb 27, 2024 21:45:25 GMT
As goldenarrow says, it's a combination of the two. The auto signalling between Harrow and Wembley is probably the oldest left on LU, dating from just after the Second World War. It was generally designed for a lower frequency of trains, not all of which will have stopped at Wembley - and certainly not designed to support the full service. |
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Post by t697 on Feb 27, 2024 22:03:39 GMT
Isn't most of Rayners to North Ealing just as old, being the last 33 1/3Hz area? Or were there subsequent tweaks?
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a60
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Post by a60 on Feb 29, 2024 8:17:18 GMT
Good morning all - has anyone close to the situation been given any updates on when this points failure may be expected to be fixed?
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Post by wonderwaller on Feb 29, 2024 11:30:02 GMT
Good morning all - has anyone close to the situation been given any updates on when this points failure may be expected to be fixed? The current plan is for the points to be restored overnight tonight 29/2 for start of service Friday. As with all of these things there are no guarantees if not sorted tonight then it will continue into next week as night tube prevents access Fri & Sat |
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Post by spsmiler on Mar 1, 2024 12:14:14 GMT
As goldenarrow says, it's a combination of the two. The auto signalling between Harrow and Wembley is probably the oldest left on LU, dating from just after the Second World War. It was generally designed for a lower frequency of trains, not all of which will have stopped at Wembley - and certainly not designed to support the full service. It sounds like having northbound fast trains skip Wembley Park would actually be a positive step in keeping the service running optimally. Perhaps all day, perhaps only in the rush hours. |
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Chris M
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Post by Chris M on Mar 1, 2024 13:18:35 GMT
Unless this would result in excessive loading (and thus delays) on the stopping service and/or overcrowding at Wembley.
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Post by A60stock on Mar 1, 2024 16:40:33 GMT
There isn't usually a qué of trains building up on the northbound to wembley during the rush hours but it would be nice to revert to pre 2012 when the fasts went straight to harrow in the peaks.
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metman
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Post by metman on Mar 1, 2024 17:33:29 GMT
Not sure if I missed something but what would be the benefit of non-stopping Wembley Park in the Northbound direction?
I could potentially see merit in non-stopping some southbound trains but it would need careful sequencing so the fast service did not end up being stuck behind the semi fast service. They other issue is customers needing to change at Wembley to head north again to stop at the affected stations would have fewer options which seems a little unfair.
I headed into London late this morning and found the journey ok. Going with a buggy highlighted the difficulty for those that might need a lift to change platforms - especially as the lift at Harrow pl3/4 was out of service!
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Post by lukeo on Mar 1, 2024 19:15:40 GMT
In one way, it seems the stop at Wembley is at least reducing the usual queue you then have at Finchley every morning, though I suppose in the end it’s all the same (though of course an annoyance for anyone wanting to use Northwick Park or Preston Road!). I’m hoping once we have CBTC from ~Preston Road it’ll help reduce the queues for Finchley heading south in the morning peaks.
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Post by A60stock on Mar 1, 2024 22:24:09 GMT
The usual que at finchely road only really starts to affect southbound trains around kilburn. Granted that it sometimes can be before this point, but the current wembley que definitely seems to take longer to clear.
But from what I've noticed at present, you still seem to get the finchely qué anyway!
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Tom
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Post by Tom on Mar 2, 2024 22:14:02 GMT
It sounds like having northbound fast trains skip Wembley Park would actually be a positive step in keeping the service running optimally. Perhaps all day, perhaps only in the rush hours. I'm not sure I quite follow your thinking here. The problem at the moment is that a full service is being run down one track which isn't signalled for the frequency it is handling and through one platform, where the dwell time is probably also adversely affecting throughput. I don't see how non-stopping on the Northbound would help things. |
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Post by A60stock on Mar 5, 2024 9:44:41 GMT
Does anyone know which points failed?
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Post by spsmiler on Mar 5, 2024 18:27:07 GMT
It sounds like having northbound fast trains skip Wembley Park would actually be a positive step in keeping the service running optimally. Perhaps all day, perhaps only in the rush hours. I'm not sure I quite follow your thinking here. The problem at the moment is that a full service is being run down one track which isn't signalled for the frequency it is handling and through one platform, where the dwell time is probably also adversely affecting throughput. I don't see how non-stopping on the Northbound would help things. My comment was based on an understanding that the problems are affecting northbound services |
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Post by t697 on Mar 5, 2024 18:56:03 GMT
My experience is that the northbound services continue to operate fairly smoothly.
And on which points, I'd understood it was 44 which is where the SB local and SB fast merge south of Wembley Park station, but I guess it could also be 47B which is where the SB Jubilee crosses to the SB local Met for Jubilee trains to reach Neasden depot 'over the top' rather than via the flyunder.
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Post by goldenarrow on Mar 6, 2024 10:08:06 GMT
Normal service restored for start of traffic today
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